PTI Announces Share Repurchase Exceeding NT$300 Million

1. Date when the cumulative number of repurchased shares reached 2% of the company's issued shares or the amount reached over NT$300 million: 2026/09/09 2. Number of shares repurchased this time (shares): 930,000 3. Total amount spent on this repurchase (NT$): 258,272,518 4. Average repurchase price per share (NT$): 277.71 5. Cumulative number of own shares held during the repurchase period (shares): 6,580,000 6. Ratio of cumulative own shares held to total issued shares (%): 0.87 7. Other matters to be stated: None.